DC servo

Hi guys,

Please find the attachement… When i connect the reference pin to 2.5V it behaves as i wanted to the output of instrumentation amplifier is 2.5V… But when I connect the feed back to the instrumentation amplifier it’s oscillating … Any suggestions… or any New ideas …

Thanks in advance


Is this in real life on on the computer?
All I see are current and voltage sources but no explanation as to what is input, output, servo, etc..

Tom.... :slight_smile:

Input is the Dc current ... need to compensate the error which i have introduced in the circuit... its just for simulation.. How do i compensate the error